Telephone charging device



Dec. 22, 1942. M. HEBEL 2,305,779 TELEPHONE CHARGING DEVICE Filed April 19, 1937 3 Sheets-Sheef l f5 /-Z Q51;

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W M Fil IyI/J (29 1 18 J7 jivmwrm Arroemzmt Dec. 22, 1942. HEBEL I 2,305,779

TELEPHONE CHARGING DEVICE Filed April 19, 1937 3 Sheets-Sheet 2 Dec. 22, 1942. u. H ggL 2,305,779

TELEPHONE CHARGING DEVICE .Filed April 19, 1937 3 sheets sheet 3 I x y, J #57 72W? Hit 2 23 Patented Dec. 22, 1942 TELEPHONE CHARGING DEVICE Martin Hebel, Upper Bavaria, Germany; vested in the Alien Property Custodian Application April 19, 1937, Serial No; 137,670

In Germany April 18,

9 Claims.

This invention relates to calculating devices for preparing accounts for telephone subscribers.

It is the principal object of the invention to provide a calculating device which will operate automatically and which requires only manual operation of type printing keys to set the device into operation and to cause it to automatically proceed, by electrically operated mechanism, to calculate the amount to be charged to a telephone subscriber having a call to another subscriber in accordance with the data set by the keys.

A further object 01' the invention is to provide an electrical device which automatically determines the zone value of a telephone connection from a factor characterising the called subscribers exchange and to provide a further electrical device which automatically determines the charge to be made from the determined zone value and from a factor characterising the duration of the telephone connection.

The calculating device according to the invention enables an operator to write easily the accounts for telephone subscribers from the data characterising the called subscriber's exchange and the data characterising the duration of the connection. In manual operated telephone systems these data are written manually by the operator on a slip or card. In automatic telephone systems, recording devices are used which print or perforate a slip or card for each connection according to the calling subscribers number, the called subscribers number the characteristic flgure" oi the called subscriber's exchange, the date, the time of day, and the duration of the connection.

The invention is illustrated by way of example in the accompanying drawings, in which Figure 1 shows portions of a typewriter used for printing the characteristic data and for indicating the determined charge;

Figures '2 and 3 show a suitable'circuit arrangement for the electrical devices used for the automatic calculation of the charges.

The typewriter shown diagrammatically in Figure 1 is described in the U. S. Patent No. 2,090,944, to Martin Hebel. It can have the usual four-row keyboard comprising keys such as the key K (Figure 1) and K2 (Figure 2) and a num-.

ber of additional keys, viz., a key K (Figure 2) which, on being depressed, prints 8. K and indicates that the characteristic charge figure of the terminal exchange is about to be recorded by the following actuation of the keys; a key KT (Granted under the provisions of sec. 14, act of March 2, 1927; 357 0. G. 5)

(Figure 2) indicating that the day tariff is in operation; and a key KN (Figure 2) indicating that the night tariff is in operation. (If there are more than two diiierent tariffs for diiierent times of the day, further appropriate special keys are provided corresponding to the keys KT and KN and each characterising a particular tarifi.) Further a key ZK (Figure 2) is provided for releasing the different devices. Clearly, these keys could belong to the usual keyboard and serve both to actuate mechanically the associated type levers TL.(Figure 1) by means of a detent KL and to initiate the appropriate switching measures by means of contacts. The keys can actuate the associated type levers either mechanical- 1y, as in the present example, or electrically.

A series of 5 permutationbars P. B. is arranged beneath the keyboard keys, i. e., not beneath the additional keys KK, KN, KT, and ZK mentioned above. On depression of a keyboard key, certain of these bars are selected in accordance with a 5-unit code and are connected to ground, thus closing circuits for the transmission of current impulses. During the normal operation of the typewriter for recording the call data, these circuits are ineflective. On the other hand, when the key K has been actuated, they become effective during the recording of the exchange number which follows. This number may have 3, 4 or more digits. In the case which will be described in detail later on, it is assumed that it has 3 digits.

The fundamental requirements ment are as follows:

The current impulse combination selected on depression of a key of the keyboardis used for storing the characteristic figure in automatic selector devices HW, ZW, EW (Figure 3). The contacts in the contact banks of these selector devices HW, ZW, -EW which serve to select the zone appropriate to the connection, are connected to the various zone points ZPl--ZP5, each of which is associated with a diiierent zone. The zone point selected by the selector devices thus indicates the zone in which the called subscribers exchange lies relatively to the calling subscribers exchange. Further a time storing selector 'I'W (Figure 3) is provided. Recording on the typewriter oi the duration of the connection is to cause the time storing selector TW to be set.

For the setting of each of the selectors HW, ZW, EW and TW a set of relays RH, RZ, RE and RG (Figure 2) respectively are provided which are connected to the premutation bars PB 0! the arrangeby means of a control switch of each set control the connection to ground of the contacts of contact banks of a selector switch AW. The contact banks are associated relay N is provided the contacts of which connect the zone points to one or the other of the switcharms of the auxiliary selectors TZWi- TZW3. When all of the elements have been set, the electrical connections made through the wipers of the auxiliary selectors is characteristic of the charge to be made. An indicating selector GW (Figure 3) is used to cause the indication of the charge. The selector GW selects a code combination made up of 5 current impulses corresponding to the digits (hundreds, tens, units and so on) of the charge. The flve current impulses are distributed over five circuits to the five selecting magnets wt to W5 (Figures 1 and 3) of the typewriter. f

Each of the magnets Wl-Wti controls by means of its armature v pivoted permutation members CB. The relative position of the five permutation members CB is tested by a set of comb-like members'FL only one of which is shown in Figure 1. These testing members are members CB during movement of the latter by the magnets Wl-W5 because of pressure exerted on their tails by the armature FB of a magnet FM which is energised as long as the contact arm gk (Figure 3) of the indicating selector GW is out of its normal position. The magnet FM (Figure 1) is of the slow-to-release type and holds its armature attracted for a short time when the relay PG interrupts its energising circuit through its left outermost contact and closes the circuits of the magnets Wi-W5. When the permutation members CB have been set, the magnet FM releases and thus the testing members FL are allowed to drop and one of them, depending upon setting of the permutation members, drops further than the rest with its teeth lying between the permutation members. The free end of that testing member FL is thus caused to bear on oted hook Hli li'and thus brings the projection mm of the hook beneath the free end of the pivoted armature DB of the printing magnet DR. The hook HM is pivotally mounted on one end of a lever SL, the other end oi which engages beneath an extension of the key K. The key K is connected to a type lever TL by means of the detent KL. When the key K is depressed or when the hook HM associated with this key is drawn down by means of the armature DB,.the type corresponding to the key K is caused to strike the platen roll PW. The printing magnet DR is slow to attract and cannot respond until the selecting magnets Wi-W have been energised and the magnet FM has released its arma ture. r

If the determined charge is to be indicated otherwise than by being printed, for example, visually, indicating instruments J i, J2, J3

WA (Figure 1) one of theheld clear of the permutation the projection hm! on a pivwhich, the

STW. The relays may be provided. These indicating instruments are actuated by means of contacts JK, one of contact JK3 connected to the indicator J3, is shown in Figure 1. It will be seen that when the lever SL is pivoted,'the contact JK3 will be closed and a circuit closed for the indicator J3. The indicators J may be constructed in any known manner. They may, for example, be in the form of hinged flaps which, when dropped, reveal particular numbers, or in the form of lamps or in the form of relays which control lamps and so on.

All the selectors and the control switch STW used in the circuit arrangement may be built as known rotary selectors as described by U. S. Patent No. 988,390 to F. Schoenwolf. The relays are built as usual telephone relays described by U. S. Patent No. 822,968, to R. H. Manson.

The general operation is as follows:

On actuation of the key KK (Figure 2), energising circuits are .closed for a relay C which closes a holding circuit by its left inner contact, and for the driving magnet ST or the control switch STW. The circuit of the magnet ST passes the switch arm stf of the control switch and its zero contact. The energisation of the magnet ST causes the switch arms sta to sth. of the control switch to move out of the zero position into their first position. The five permutation bars PB which lie beneath the typewriter keys are thus connected to a set of relays RHl-R.H5 which serve to store up the hundreds digit of the 3-digit number or the terminal exchange. If, for example, the key K2 having the signal combination depressed, the 1st, 2d, 3d, and 4th bars PB will be grounded and the relays RHl, RH2, EH3, and EH4 be energised. These relays close holding circuits including their-left working contacts respectively, the outer left contact of a relay U! and the winding of a relay Fl. The relay Fl is first of all short circuited by the depressed key KZ; it is only energised after release of the actuated key K2 and then its left working contact closes a circuit for the magnet ST which energises and causes the switch arms oi! the control switch STW, to step into their 2nd position for the reception of the next signal combination. In the 2nd position of the switch arms sin to ste a set of relays RZI to RZ5 is connected to the five permutation bars PB. This set or relays is arranged in the same manner as the set of relays RH! to RHS which are shown in the drawings. By depression r the key corresponding to the tens digit of the exchange number, this digit will be stored in the relays RZi to R25. On release of this key the relay F2 is energised and the switch arms of the control switch STW are moved into their 3rd position. Now the units digit can, by a similar procedure, be stored in the relays REi to RES similarly arranged as the relays RHI to EH5 and relay F3 will be energised.

The next entry made by the typist is the subscribers number. This is not material in the calculation of the charge, and, therefore, the recording of this number is not accompanied by a shift of the control switch STW. When, however, the key KN or the key KT is depressed-to indicate which of the scales of charges is in force, a circuit for the magnet ST is closed passing over the left contact of relay F3 and the switch arms of the control switch STW are moved into their 4th position in which a set of relays RGi to RG5 similarly arranged as the relays RBI to EH5 is connected to the permutation bars PB for storing the number of units of time representing the eifective duration of the connection. These recontact of the relay Ui connects the driving mag lays. are held energised in a circuit which innet DZ (Figure 3) oi the zone selector ZW to cludes the relay F4. the driving line H 2.- Now, on release of the relay The stored combinations now have to be trans- P, the switch AW is again stepped and the left mitted toazone determining apparatus. For this is contact of relay AZ (Figure 2) transmits impurpose, a rotary switch AW is provided having pulses to the driving magnet DZ or the zone seswitcharms an to ac each wiping over a bank of lector ZW. Over upper outer con act of relay P, ll contacts and a driving magnet DA for stepline H I, relay V (Figure 3), line H2, right outer ping these arms. The contacts oi each set 01 contact of relay U3, right cuter contact of relay relays RH, RZ, RE and RG are arranged py- U2, right outer contact of relay Ui, line ill to ramidally so that a particular contact in one of winding of magnet DZ (Figure 3). When the the banks wiped over by the arms aaad can be arm ab reaches the contact or its bank which is grounded when a key is depressed and a signal grounded by the contacts the set or relays RZ combination is stored. The contacts in these the relay P limits this emission of impulses, de banks characterise the numerals I-l. Thus, on M termines the re-setting of the swit"h arms ad to depression of the key K2 with the control switch a! and, in the zero position 01' the switch AW wiped by the switch am an will be grounded. 2 and units digits are successively transmitted gising circuit for the driving magnet DA oi the relay P, the right contact of relay F3, the right switch AW unning over the right contacts of remiddle contact of relay U2, the right inner conlay C, the right contact 0! a relay AZ, the switch tactpf relay U3 and the winding 0' relay U3. The arm sth, the upper middle contact of a relay P right inner contact oi relay U3 closes a holding and the magnet DA. The magnet DA on energicircuit for this relay and the right outer contact sation controls its left contact which closes a circonnects the driving magnet DT to the cult of the magnet DA while the left contact of gisation of relay U3, the appropriate number or the relay AZ transmits an impulse to the driving impulses corresponding to the duration of the magnet DH 01 the zone selector HW (Figure 3) 3 connection which is stored by the set of relays HQ in the circuit: is transmitted in the same manner to the driving magnet UT of a, time selector TW. The zone *bg g fz gfi f ffif i g fg g lf selectors I-lW, zw, EW and the time selector 1w, 1 outer right contact of relay U Outer right illustrated in Figure 3 are rotary selectors. Strowger selectors linear selectors in short secontact of relay U2, outer right contact or rclectors of all kinds can also be used. The zone my line magnet DH (Figure 3) selector HW has a single arm which wipes over a Thus, the switch arms 01' the selector switch AW k of 10 t t E of th and storing selector HW are actuated in steps. connected t 3 am t one of and the inner lei't contact of relay, Ui responds. By means of its lower outer make-before break each wiping over a bank of ten m contact relay P 01 868 a holding circuit its nections exist between the contacts of the banks lo i d Including the switcharm we which wiped by the arms 01' the zone selector zw, the is only opened when t e a m o e switch contacts oi the banks wiped by the arms or the AW is restored to its zero position. Als y zone selector EW and the incoming contacts 01' a Inca-K150i s middle pper contact relay P closes distributor frame ZST. This distributor frame 8 n pp 01101-115 the driving magnet DA has five outgoing contacts or zone points ZPi p n o e sw c arm the right Contact to ZP5. The connections between the incoming of relay AZ and the right contact of relay C. The t t and t zone points are m' t switch arms of the switch AW continue to rocording t t situation tate until the arms reach the normal position in the zone selectors HW, ZW and EW are prowhich the arm a) opens the S epp ng circuit vided within the sy tem or a plurality 0! ex- During the stepping into the normal position, the changes. The wiring is such that when the wipers uppe u er ta t 01 re y Pprevents the transor the zone selectors Hw, zw and EW are sucmlssion f impulses t6 the driving magnet DH cessively stepped by the magnets DH, DZ and DE its zero position, the lower inner contact of relay a zone point p will be g u the right contact of relay Fl and the ri h in each or the zone selectors HW, ZW and EW. inner contact of relay Ul. Relays U! is held in However, in some cases, a connection can be made a local circuit closed by its right inner contact. which does not pass over a contact in the zone The left inner contact 01 the relay Ui connects selector EW. For example, if all exchanges havthe relay P to the arm ab and the right outer lng numbers sic-m belong to zone III relatively to the calling exchange, then the first con- HW, ZW and EW have made a connection to the tact in the eighth bank of the zone selector ZW zone point ZPZ. It will also be assumed that the can be wired directly to an incoming contact of connection has been made during the day time the distributor frame ZSl connected to the zone and, therefore, that relay N is not energised. point ZP3 as is indicated in Figure 3. 5 Finally, it will be assumed that the connection When a zone point has been selected, the conlasted three minutes and the appropriate charge nection is extended by means of the appropriate is $l.45. Since the connection lasted three mmone of a number of two-position contacts of a utes the wiper to of the time selector TW stands r ay N. These contacts serve to take into acon the third contact. If now the selectors TZWI, count the time of day at which the call is made. TZWZ and TZW3 are successively put into action It is assumed here that there are two tarifis as described later on, their wipers move to the a day tariff and a night tarifi. In Figure 3 they third contact of their contact banks. It only reare shown in the position in which they determains now to make the required connections mine that the call shall be charged for in acfrom the zone point ZPZ to the charge indicator cordance with the day tariff. In this case key 1:, G. These connections are as follows: KT (Figure 2) was actuated. If there are more Third contact bank wiped by the wiper felt than two tariffs, then the contacts of the relay of the selector TZWl (third from the top in N must have more than two positions or else ex- Figure 2) to the first contact of the contact bank tra contacts must be provided. For charging the wiped by the wiper g! of the selector GW; third call in accordance with the night tarifi key KN contact of the contact bank wiped by the wiper must be actuated. When the key KN (Figure 2) i223 or the selector TZWZ to the fourth contact is actuated an energising circuit for relay N is of the contact bank wiped by the wiper gh of closed passing through line Hl, lower contact of the selector GW; third contact of the contact relay N and the winding of this relay. Relay N bank wiped by the wiper 6233 of the selector closes then a holding circuit for itself running TZWS to the fifth contact of the contact bank over its lower front contact and the right conwiped by the wiper at of the selector GW. The tact of relay CR which was energised over line distributor frames VST and WST are wired to M8 on actuation of relay C (Figure 2). enable such connections to be made and to make Three auxiliary selectors TZWi, TZW2 and all similar connections corresponding to the set- TZW3 coact with the wiper ta of the time selector ting of the selectors HW, AW, EW, TZWl TZWZ, TW. The wipers of these auxiliary selectors can TZW3 and of the upper contacts of the relay N. he stepped by the driving magnets DTZl, DTZZ The three time setting selectors TZWi, TZWZ and DTZS. Each of these selectors .has assoand TZW3 are set successively from their rest ciated with each of the zone points Z?! to 2P5 position when the relay V (Figure 3) releases as many wipers as there are tariffs (in the pres- 5 and the time storing selector TW has been fully ent case, two-One for the day tarifi and one for 'set in accordance with the number of units repthe night tariff). According to the state of enresenting the duration of the connection. The ergisation of the relay N, one or the other of these energising circuit of the magnet UIZl (Figure 3) wipers is connected to the zone point. The conpasses the winding of magnet DTZi, self-intertacts oi the various contact banks or these se- 40 rupting contact of this magnet, contact of relay lectors are individually connected to the incom- V, contact and switch arm tb or selector TW, ing contacts of the distributor frame VST. The right outer contact of relay U5, right contact outgoing contacts or the frame VST are 0011- of relay PZ, right contact of relay CR to ground. nected by a cable TW to the incoming contacts or The switch arms of the selector TZWi are roa further distributor frame WS'I. To the outgo- 5 tated until its lowest upp r switch arm reaches ing contacts of'this distributor frame WST are the contact grounded by means of the switch the contacts of the contact banks of a selector arm Then the relay PZ is energised and GW which serves as a charge indicator. In the interrupts the circuit for magnet DTZI. All the example under consideration here, the charges ms of the selector TZWI wired for indicatin are worked out on a decimal system. The sethe hundreds d s hown vertically above each lector GW is provided with nine switch arms ga, o her in F gure 3) are then in phase with the to gk each wiping a contact bank having ten conarm ta of the time storing selector TW. A contacts. The contact bank wiped by the wiper gf tact in the bank wiped over by the wiper g! of the selector GW serves to indicate the hunof the charge indicator G is thus grounded dreds digit of the charge, the contact bank wiped thmugh the arm of the selector TZWl which by the arm on the tens digit, and the contact ank is connected to the selected zone point ZPZ. The wiped by the arm gi the units "digit. Thus, the d ing magnet D oi the charge indicator GW contacts of the contact bankwiped by the wiper is switched in on response of the relay PZ by g] are connected by way of the two distributor its left contact. The charge indicator GW roframes WST and VST to the contacts of the so tates its arms c-gk until the switch arm gicontact banks of the selector TZWE; the contacts reaches the grounded contact. Then the testing of the contact bank wiped by the wiper gh to the relay PG connected to the switch arm g) through contacts of the contact banks of the selector the right'inner contact of relay U6 and the left 'IZW'Z; and the contacts of the contact bank inner contact of relay U5 is energised. The next wiped by the wiper gt to the contacts of the cont the innermost left contact of relay PG inter" tact banks of the selector TZWi-l. These connecrupts the circuit of the stepping magnet DG. tions are such that when the three selectors The next to the outermost left contact of relay TZWi, TZW2 and TZW3 are set to the contact PG connects the switch arms on to ge'of selector selected by the setting of the wiper m the hun- GW o e Pr a e T e perm adreds, tens, and units digits of the amount or the tion r magn ts Wi to We are connected to charge are characterised on t thr t ct the various contacts or the associated contact banks of the Selector w banks. In the circuit of magnet DR the selected It will be assumed that the connection, for ones of these permutation bar magnets are also which the charge is to be determined, belongs energised and the type associated to the charge to zone H so that the switcharms of the electors value is printed. The left inner contact or relay PG opens the circuit of relay PZ which releases.

On the response of relay PG further a circuit for relay U4 is closed as follows: right outer contact of relay CR, right Outer contact of relay PG, switch arm tzlb of selector TZWI, winding of relay U4 to battery. Relay U4 attracts its passing the winding of magnet DTZ2, self-interrupting contact of this magnet, right contact of relay U5, right outer contact of relay U4, right outer contact of relay PZ, right outer conpassing the iter contact of the relay PG closes an for relay U5 which attracts and holds itself by means of its left outer conright contact of relay U5 closes a tion respectively whereupon those stepping circuits are interrupted.

In the example described above, the zone determ ning device comprising the selectors HW ZW, EW ZP|--ZP5 (see Figure 3.)

and the zone points The various direct connections between the incoming contacts of the distributor frame ZS'I connected to the contact banks of the selectors HW, ZW and EW and the zone points ZPl-ZP5 are preferably plug and cable connections which allow alterations and additions to be easily effected.

In the form described above, the device is suitable, in conjunction with the charge-slip printer, for use with automatic telephone operation. It is, however, not restricted thereto. can be used for converting the charge-slip of manual exchanges into account forms as long as the terminal exchange is indicated on the slip, not by its name but by its characteristic charge number.

The characteristic numbers" of exchanges are frequently in the form of combinations of letters both letters and figures, the dials being then provided with letters in addiof figures. The letters correspond, of course, to simple above can clearly be used in such cases. It is also usual in large telephone networks for a subscn'bers number to include a part of the name of the exchange. In sucha case, the letters giving the indication of the identity of the exchange can be used on the charge-slips typed at the exchange and be used in the determination of the charge by the device in accordance with the invention.

When a typewriter provided with adding devicesis used which will print the sum of a number of recorded amounts, a completed account can be printed by the machine.

I claim:

factor characterising the duration of the connection, comprising in combination a keyboard having keys operable to set said data, a plurality of permutation circuits controlled by said keys,

setting of said second-mentioned factor to connect the other of said groups to said permutation circuits, a. plurality of zone of said first-mentioned factor, electrical switch means controlled by said flrst-mentioned group of storing relays for the selection of one of said zone lines and electrical switch means controlled by said second-mentioned group of storing relays for the connection a circuit characteristic of a keyboard having keys operable to set said data, a plurality of permutation circuits controlled by said keys, two groups of storing relays, a sequence switch adapted on operation of said keys for the setting of said first-mentioned factor to connect one of said groups of relays to said permutation circuits and on subsequent operation of said keys for the setting of said second-mentioned factor to connect the other of said groups to said permutation circuits,a plurality of zone lines characteristic of said first-mentioned factor, means including a, plurality of zone selectors controlled by the keys used in setting said first-mentioned factor lines characteristic for the selection of one of said zone lines, a pluadapted on operation of said keys for the setting rality of charge characterising circuits, and elecof said first-mentioned factor to connect one of trical switch means controlled by the keys used said groups of relays to said permutation circuits in setting said second-mentioned factor for the and On subsequent operation of said keys for the connection of a circuit characteristic of both said setting of said second-mentioned factor to confactors to said selected zone line. nect the other of said groups to said permutation 3. A device for determining telephone charges circuits, a plurality of zone selectors controlled from manually set data including a factor charby the keys used in setting said first-mentioned acterising the called subscribers exchange and factor, a plurality of zone lines connected to the a factor characterising the duration of the concontacts of said zone selectors, aplurality of time nection, comprising in combination a keyboard selectors controlled by the keys used in setting having keys operable to set said data, a plurality said second-mentioned factor having switch arms of permutation circuits controlled by said keys. connected to said zone lines, aplurality of charge two groups of storing relays, a sequence switch characterising lines connected to the contacts of adapt-ed on operation of said keys for the setting said time selectors and a charge selector used in of said first-mentioned factor to connect one of selecting one of said charge characterising lines.

said groups of relays to said permutation circuits 6."A device for determining telephone charges and on subsequent operation of said keys for the from manually set data including a factor charsetting of said second-mentioned factor to conacterising the called subscribers exchange and a nect the other of said groups to said permutation m factor characterising the duration of the concircuits. means including electrical switch means nection, comprising in combination a keyboard controlled by the keys used in setting said flrsthaving keys operable to set said data, a plumentioned factor whereby to close a circuit charrality of permutation circuits controlled by said acteristic of said first-mentioned factor, a time keys, two groups of storing relays, a sequence selector controlled by the keys used in setting switch adapted on operation of said keys for the said second-mentioned factor, a further selector setting of said first-mentioned factor to concontrolled by said time selector and having a nect one of said groups of relays to said permutaplurality of swit h arms each, connected to one 'tion circuits and on subsequent operation of said of said circuits characterising said first-menkeys for-the setting of said second-mentioned tioned factor, and a plurality of charge charac 3@ factor to connect the other of said groups to terising circuits connected to the contact bank said permutation circuits, means including elecof said further selector. trical switch means controlled by the keys used 4. A device for determining telephone charges in setting said first-mentioned factor whereby to from manually set data including a factor charselect a zone point characteristic of said firstacterising the called subscribers exchange and a 3g mentioned factor, a time selector controlled by factor characterising the duration of the conh k y d in se n a s cond-menti ned nection, comprising in combinati n a keyboard factor, at least one auxiliary selector controlled having keys operable to set said data, a plurality by Said time Selector and having a plurality of of permutation circuit c ntr ll d by s id k switch arms each connected to one of said zone two groups of storing relays, a sequence sw tch to Points characterising said first-mentioned factor, adapted on operation of aid keys for th setting a charge indicating selector, a plurality of charge of said first-mentioned factor to connect one of characterising Circuits COW-fleeting the Contacts said groups of relays to said permutati i of said auxiliary selector to the contacts of said cults and on subsequent operation of said keys harge indicating se e te in means for for the setting oi said second-mentioned factor as Setting said auxiliary selector w e eby to select to conn ct th th of i groups t said perone of said charge characterising circuits and mutation circuits, a plurality of g i'mes consequently to characterise one of said lastcharacteristic of said first-mentioned factor, elecmentioned Contacts, and Switch means f r 89 8 1 -1 1 it means t n by aid flrst-men said charge indicating selector on to said chartioned group of storing relays for the selection 60 actellsed f fiof one of said zone lines and the consequent A devlce determining telephone a ges preparation of & m m of charge chuacterfrom manually set data including a factor charising circuits, electrical switch means controlled acterising the called subscriber's exchange and bygaid seconmmentioned group cf Storing a, factor characterising the duration of the conlays for the selection from said plurality of pre- "action, comprising in cmbimi110n a keyboard pared chargecharacterising' circuits of a circuit having keys Operable to Set 59m 185w, plurality characteristic of both Said f ct a type printof permutation circuits controlled by said keys,

ing device for pr nting the determined telephone two ps of storing relays, a sequence switch charges, a plurality of selecting magnets conadapijled on cpemfion of Said keys for the Setting trolling said type printing device, a selector switch 60 of Sand first'memloned factor to connect one 0! having two groups of contact-banks and switch said groups of relays 591d permutation arms, one of Said groups of Contact banks being cults and on subsequent operation of said keys connected to said charge. characterising circuits for the setting of said Second-mentioned mm)? and the other to said selecting magnets, and ts connect the Qthef of said groups Said P electrical testing means controlling the setting of 55 mutation circuits, means including electrical said selector switch and actuating said selecting Switcn means wntmuefi by the 17 used in magnets over said switch 95mg ing said first-mentioned factor whereby to select 5. A device for determining telephone charges a zone point characteristic of said first-mentioned from manually set data including ai'actor char fi a time Selefiilol contiflned by the keys acterising the called subscribers exchange and a mj used in setting said second-mentioned factor, a factor characterising the duration of the connecplurality of auxiliary selectors controlled by said tion, ccmprising in combination a keyboard havtime selector and each having a plurality of switch ing keys operable to set said data, a plurality of arms each connected to one of said some points permutation circuits controlled by said keys, two "F characterising said first-mentioned factor, a groups of storing relays, a sequence switch charge indicating selector having a plurality 01 switch arms one for each digit of the charge and charge lines and consequently to characterise one a like number of contact banks wiped each by one of said last-mentioned contacts, and means for of said arms, a plurality of charge lines each setting said charge indicating selector on to said connecting the contacts of one of said auxiliary characterised onta t, selectors to the contacts of one of the contact 9. A device for determining telephone charges from manually set data including a factor charanother of said auxiliary selectors to another acterlsing the called subscriber's exchange and a of said contact banks, and so on, switch means factor characterising the duration of the connecfor setting said auxiliary selectors whereby to tion, comprising in combination a keyboard havselect a plurality of said charge lines connecting m keys operable t et said data, plurality of one of said contacts of each of said auxil y permutation circuits controlled by said keys, two selectors to one contact in each of said contact groups of storing relays, a sequence switch anks a d qu y t characterise a adapted on operation of said keys for the setting tact in each of Said contact ban s nd testing of said first-mentioned factor to connect one of means for successively setting said arms of said aid groups of relays to said permutation circults and on subsequent operation of said keys characterised contacts, another on to anothe for the setting of said second-mentioned factor and so on. to connect the other of said groups to said per- 8- A device o determining telephone Charges mutation circuits, a plurality of zone lines, a fr m m ua y set d a n ud a fa charplurality of zone selectors controlled by the keys c e s the Called e 's exchange 811d used in setting said first-mentioned factor for a factor characterising the duration of the conthe selection of one of said zone lines charactern c on, c mp sin in combination a keyboard lstic of said first-mentioned factor, a time selecsetting of said second-mentioned factor to conarms of said auxiliary selectors, a charge indinect the ot er f a d groups o S Permutation cating selector having three contact rows and Circuits. a p ity of zone" points characthree switch arms corresponding to the hunteristic of said first-mentioned factor, electrical dreds, tens and units digits of the charge a p1u sw tch m a s controlled y he keys used in ralit-y of charge lines each connecting the conse a fi s mentioned factor whereby o tacts of each of said auxiliary selectors to one of select a zone point characteristic of said firsti ta t r of i charge indicating selecmentioned factor, a time selector controlled by tor, switch means for making said switch arms selec or h vin a pl r i y of swi ch arms for time selector for setting said auxiliary selectors each of a o e p s, C t on o by whereby to select a plurality of said charge lines said tari f d sc im a a s o connecting leading one to each of said contact rows and conone of said last mentioned switch arms to one of sequently to characterise a Contact in each of said zone points, a charge indicating selector, a said rows and switch means for stepping said plurality of charge lines connecting the contacts charge indicating selector three times over said of said auxiliary selector to the contacts of said contact rows each time with a difierent arm charge indicating selector, switch means coneffective whereby to set said selector successively trolled by said time selector for setting said ontoeach of said characterised contacts. auxiliary selector whereby to select one of said MARTIN HEBEL. 

